TPS65510
- Power-Path Switch to Select Main Battery or Backup Battery for Real-Time Clock (RTC)
- Integrated Boost DC/DC Converter
- Modulation Select by Control Pin (PWMON), Pulse Frequency Modulation (PFM) or Pulse Width Modulation (PWM)
- Fixed Switching Frequency (PWM, 750 kHz)
- Peak Current Mode Control (PWM)
- Low Power Consumption (PFM)
- Four Integrated Low Dropout (LDO) Voltage Regulators for 1.2 V/1.8 V/3.3 V
- Two Integrated Indicators
- CS: Monitors the Voltage Level of Main Battery (VBAT) and Output voltage level of Boost Converter (VO_BT)
- XRESET: Monitors the Output voltage Level of 3.3V LDO (VOUT)
- 16-Pin QFN (3mm × 3mm) Package
- Operating Temperature –35°C to 85°C
- Protection
- Overcurrent Protection (OCP)
- Overvoltage Protection (OVP)
- Thermal Shutdown (TSD)
- Undervoltage Lockout (UVLO)
- APPLICATIONS
- Digital Still Cameras
- Portable Systems With Backup Battery
PowerPAD Is a trademark of Texas Instruments.
The TPS65510 offers a suitable solution for power switch to select the main battery or the backup battery.
This device automatically selects the power path. It depends on the voltage level of the VO_BT pin. When the main battery is removed, the power path of the VOUT pin is automatically changed from the output of 3.3-V low droppout (LDO) voltage regulator to the backup battery.
The backup battery is charged from the power path of the VRO pin (output of 3.3-V LDO) via an external diode and resistor. The input of the LDO voltage regulator comes from the internal boost converter.
The 1.2-V output LDO and 1.8-V output LDO voltage regulators have a enable pin, V_CTRL. If these outputs are not necessary, V_CTRL should be connected to AGND to save power consumption. The self-power consumption is less than 3 µA (maximum) using the backup battery.
This device has two indicators. One is CS, which monitors the voltage level of the VBAT pin and VO_BT pin. The other is XRESET, which monitors voltage level of the VOUT pin. These indicators should be connected to CPU/DSP to reset them.
This device reduces the total solution area and extends the lifetime of the backup battery.
技术文档
类型 | 标题 | 下载最新的英语版本 | 日期 | |||
---|---|---|---|---|---|---|
* | 数据表 | Low-Power Battery Backup IC With Integrated BOOST Converter 数据表 | 2008年 9月 16日 |
设计和开发
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封装 | 引脚 | 下载 |
---|---|---|
VQFN (RGT) | 16 | 查看选项 |
订购和质量
- RoHS
- REACH
- 器件标识
- 引脚镀层/焊球材料
- MSL 等级/回流焊峰值温度
- MTBF/时基故障估算
- 材料成分
- 鉴定摘要
- 持续可靠性监测
- 制造厂地点
- 封装厂地点